/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package ru.miit.elearning.servlets.pages;

import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.Session;
import ru.miit.elearning.hibernate.dao.GenericDAO;
import ru.miit.elearning.hibernate.dao.HibernateUtil;
import ru.miit.elearning.hibernate.dto.beans.SearchResult;

/**
 *
 * @author Cyclone
 */
public class SearchServlet extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");

        Session session = null;
        try {
            String query = request.getParameter("q");
            if(query != null && query.length() > 2) {
                session = HibernateUtil.getSessionFactory().getCurrentSession();
                session.beginTransaction();
                GenericDAO genericDAO = new GenericDAO(session);
                List<SearchResult> resultList = genericDAO.search(query);

                if(resultList != null && resultList.size() > 0) {
                    request.setAttribute("resultList", resultList);
                }

                getServletContext().getRequestDispatcher("/search.jsp").forward(request, response);

                if(session != null && session.isOpen()) {
                    session.getTransaction().commit();
                }
            } else {

            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally { 
            if(session != null && session.isOpen()) {
                session.close();
            }
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
